The Push-fit Barbed Coupling – lead free with all the necessary approvals. it is easily removable and reusable. Its Push-Fit connection mechanism is really taking hold. It is the easiest way to join copper, CPVC or PEX pipe in any combination with no soldering, clamps, unions or glue. Just insert the pipe and the stainless-steel teeth bite down and grip tight, while a specially formulated O-ring compresses to create a perfect seal. Disassembly is just as fast using the simple disconnect tool.